1Code C249F, if the running time of component A7/3 exceeds (SBC hydraulic device), it means that there is an internal failure of the control unit, and the SBC control module needs to be replaced.2The repair is relatively simple, you can use the W211/R230 TOOL to repair, no need to replace a new control module.3Before performing any maintenance work on the brakes (such as changing brake pads, brake discs and brake fluid), it is necessary to deactivate the SBC system.4The mechanics who perform braking services on these models must have the appropriate tools to avoid the risk of personal injury and damage to the braking system.5Before launching this cheap, convenient, light, safe and easy-to-use SBC tool, it was another alternative to the STAR-DIAGNOSIS tester when working on SBC systems. It can perform tasks equally well, efficiently and safely.6This SBC tool is suitable for W211 (E-level) and R230 (SL-level) with SBC system. It can be operated quickly and easily through LED instructions, and it can also ensure safe use.7The OBDII diagnostic connector that turns on the power when plugged into the vehicle is light, compact and very convenient, and it is an independent unit.